c# - 将 WPF DLL 加载并运行到另一个 WPF exe 中

Question

我的主要问题正如我在标题中所述。

WPF_APP1 --> 我在排除 App.xaml 后创建了这个 wpf 项目的 dll
WPF_APP2 --> 普通 WPF exe。这需要运行上面的 WPF_APP1 dll 并使用反射打开 WPF_APP1 MainWindow 窗体。

为什么我要反射(reflection)的是——WPF_APP2先获取最新的WPF_APP1.dll再打开所以不能添加dll的引用。必须仅使用反射。

当我在 cmd 项目中使用上面的 dll 时它没问题。它打开 CMD 窗口，然后以窗口形式启动 WPF_APP1 MainWindow。

但是现在我需要在 WPF_APP2 中打开此窗体，而不是在 cmd 中。

请帮帮我。

CMD 项目使用以下代码打开WPF_APP1 MainWindow。

    static void Main(string[] args)
    {            
        Thread t = new Thread(ThreadProc);
        t.SetApartmentState(ApartmentState.STA);
        t.IsBackground = true;
        t.Start();

        Console.ReadLine();                   
    }


    private static void ThreadProc()
    {
        string loc = new FileInfo(Assembly.GetExecutingAssembly().Location).DirectoryName
                      + "\\AutoUpdateTesting.dll";

        Assembly dll = Assembly.LoadFile(loc);

        foreach (Type type in dll.GetExportedTypes())
        {                
            if (type.Name.Equals("MainWindow"))
            {                   
                dynamic n = null;
                n = Activator.CreateInstance(type);
                n.InitializeComponent();
                System.Windows.Application apprun = new System.Windows.Application();
                apprun.Run(n);

                break;
            }
        }

    }

我不能用线-

    System.Windows.Application apprun = new System.Windows.Application();

在 WPF_APP2 中，因为 AppDomain(在 google 上找到了这个原因)。尝试其他替代方案，但没有成功。

请查看并分享您的知识。 :)

等待您的评论和回复。

谢谢

Answer 1

从表单应用程序加载 WPF 窗口:

static class Program
{
    [STAThread]
    static void Main()
    {
        Application.EnableVisualStyles();
        Application.SetCompatibleTextRenderingDefault(false);
        ThreadProc();
        Application.Run(); // Keep on running!
    }

    private static void ThreadProc()
    {
        if (System.Windows.Application.Current == null)
            new System.Windows.Application();
        try
        {
            string assemblyName = string.Format("{0}\\AutoUpdateTesting.dll", new FileInfo(Assembly.GetExecutingAssembly().Location).DirectoryName);
            System.Windows.Application.Current.Dispatcher.BeginInvoke(DispatcherPriority.Normal, new Action(() =>
            {
                Window wnd = LoadAssembly(assemblyName, "OtherWindow");
                wnd.Show();
            }));
        }
        catch (Exception ex)
        {
            System.Diagnostics.Trace.WriteLine(string.Format("Failed to load window from{0} - {1}", "OtherWindow", ex.Message));
            throw new Exception(String.Format("Failed to load window from{0} - {1}", "OtherWindow", ex.Message), ex);
        }
    }

    private static Window LoadAssembly(String assemblyName, String typeName)
    {
        try
        {
            Assembly assemblyInstance = Assembly.LoadFrom(assemblyName);
            foreach (Type t in assemblyInstance.GetTypes().Where(t => String.Equals(t.Name, typeName, StringComparison.OrdinalIgnoreCase)))
            {
                var wnd = assemblyInstance.CreateInstance(t.FullName) as Window;
                return wnd;
            }
            throw new Exception("Unable to load external window");
        }
        catch (Exception ex)
        {
            System.Diagnostics.Trace.WriteLine(string.Format("Failed to load window from{0}{1}", assemblyName, ex.Message));
            throw new Exception(string.Format("Failed to load external window{0}", assemblyName), ex);
        }
    }
}

这就是表单的诀窍!请记住，您需要添加对基础 WPF 程序集(PresentationCore、WindowBase+++)的引用

WPF loading external window(看错了你的帖子，所以这里你也有 wpf 到 wpf)

public partial class App : Application
{
    App()
    {
        Startup += App_Startup;
    }

    void App_Startup(object sender, StartupEventArgs e)
    {
        try
        {
            string assemblyName = string.Format("{0}\\AutoUpdateTesting.dll", new FileInfo(Assembly.GetExecutingAssembly().Location).DirectoryName);
            Window wnd = LoadAssembly(assemblyName, "OtherWindow");
            wnd.Show();
        }
        catch (Exception ex)
        {
            System.Diagnostics.Trace.WriteLine(string.Format("Failed to load window from{0} - {1}", "OtherWindow", ex.Message));
            throw new Exception(String.Format("Failed to load window from{0} - {1}", "OtherWindow", ex.Message), ex);

        }
    }

    private Window LoadAssembly(String assemblyName, String typeName)
    {
        try
        {
            Assembly assemblyInstance = Assembly.LoadFrom(assemblyName);
            foreach (Type t in assemblyInstance.GetTypes().Where(t => String.Equals(t.Name, typeName, StringComparison.OrdinalIgnoreCase)))
            {
                var wnd = assemblyInstance.CreateInstance(t.FullName) as Window;
                return wnd;
            }
            throw new Exception("Unable to load external window");
        }
        catch (Exception ex)
        {
            System.Diagnostics.Trace.WriteLine(string.Format("Failed to load window from{0}{1}", assemblyName, ex.Message));
            throw new Exception(string.Format("Failed to load external window{0}", assemblyName), ex);
        }
    }
}

希望对您有所帮助!

干杯

斯蒂安